AT525562A4 - Track layout and track layout system - Google Patents

Abstract

The invention relates to a track arrangement of a slab track for forming a track (1) for rail traffic, comprising: (a) several prefabricated track supporting slabs (2) made of reinforced concrete, in particular of loosely reinforced concrete, (b) one between the aligned in their position Track support slabs (2) and a base layer (3) cast and hardened casting compound (4), (c) several rail support points (6) provided on the track support slabs (2) for fastening the rails (1), the base layer (3) consisting of Asphalt consists or comprises asphalt, the base layer (3) protruding laterally beyond the sealing compound (4) in the transverse direction of the course of the track, so that a base layer overhang (7) is formed, the base layer overhang (7) being covered by a covering layer (8) which is impermeable to water and consists of asphalt or comprises asphalt, and wherein the surface (9) of the covering layer (8) has a slope in the transverse direction of the course of the track. The invention also relates to a method for forming a track arrangement.

Description

Track layout and track layout system

The present invention relates to a track arrangement and a track arrangement system having the features of the independent patent claims. The invention also relates to a method for forming such a track arrangement.

So-called slab track systems for track construction are known in the prior art and are widely used for the production of modern rail routes. In such systems, instead of sleepers supported on a ballast bed, track support slabs are used to fasten the tracks and other devices that are arranged on a support layer. The track support slabs are fastened to the base layer, for example, using a hardened casting compound. In the prior art, hydraulically bound base layers and/or concrete base layers are usually used as the base layer.

In addition to hydraulically bound base courses and concrete base courses, asphalt base courses are also known in the prior art, which have considerable advantages compared to the first-mentioned base courses, for example with regard to the construction time. Known asphalt base courses, however, have high demands on their manufacturing tolerances, which in turn increases the effort involved in manufacturing. In addition

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Adequate drainage must be ensured for asphalt base layers in order to

to avoid frost damage, for example.

It is therefore an object of the present invention to overcome the disadvantages of existing slab track systems with asphalt base courses and to create a track arrangement that can be produced in a time- and cost-efficient manner and at the same time is suitable for the high requirements of modern track construction.

A track arrangement should preferably be created which enables the track support slabs to be precisely aligned. In particular, a track arrangement is to be created that has a longer service life for the base layer by protecting it from damaging effects such as water ingress and thus from frost damage and UV radiation and thus from aging. In particular, a track arrangement is also to be created that allows certain tolerances during production. Furthermore, a track arrangement is to be created in particular that enables a firm connection between the casting compound and the base layer, this firm connection being achieved, if necessary, by interlocking the casting compound and the base layer surface without additional anchoring or connecting means

becomes.

These and other objects of the present invention are optionally achieved by a track arrangement having the features of independent patent claim 1 .

The present invention relates to a track arrangement of a slab track to form a track for rail traffic, comprising:

- several prefabricated track supporting slabs made of reinforced concrete, in particular of loosely reinforced concrete,

- a cast and hardened casting compound between the track supporting slabs aligned in their position and a supporting layer,

- several rail support points provided on the track supporting slabs for fastening the rails,

- wherein the base course consists of asphalt or comprises asphalt, and

- where the base layer protrudes laterally beyond the sealing compound in the transverse direction of the course of the track, so that a base layer overhang is formed,

If necessary, it is envisaged that the overhang of the supporting layer is covered by a covering layer which is impermeable to water and consists of asphalt or comprises asphalt which is impermeable to water.

If necessary, it is provided that the surface, ie the upper surface, of the covering layer has a gradient that drains outwards in the transverse direction of the course of the track

having.

If necessary, it is provided that the gradient is at least 2%, in particular 4%, with the gradient preferably being between 2% and 10%.

If necessary, it is provided that a drainage surface is provided, which runs continuously along the surface of the cover layer and along the surface, ie the upper surface, of the casting compound.

If necessary, it is provided that the drainage surface is formed by a layer with a thickness of at least 2 cm that comprises the covering layer and the casting compound.

If necessary, it is provided that the surface, ie the overhead surface of the

Base layer is a flat surface.

If necessary, it is provided that the surface of the base layer is designed without a slope in the transverse direction of the track.

If necessary, it is provided that the surface of the base layer is an area formed by an asphalt paver with a tolerance of at least 0.5 cm, in particular between 0.5 cm and 1 cm, from the target height. The target height is

in particular the target height in relation to the rail.

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If necessary, it is provided that a transition layer is provided in the transition area from the base layer to the casting compound, in which the casting compound in the

Base layer is infused and protrudes into the base layer in the cured state.

Optionally, it is provided that the transition layer has a thickness of at least

has 5 mm.

If necessary, it is provided that the roughness of the surface of the base layer is designed or selected in such a way that the coefficient of friction between the base layer and the casting compound is u=0.6, in particular u=0.7, according to EN 1992-1-1.

If necessary, it is provided that a drainage surface is provided, which runs continuously along the surface of the cover layer and along the surface, ie the upper surface, of the casting compound.

If necessary, provision is made for the drainage area to have a continuous gradient in the transverse direction of the track.

Optionally, it is provided that the top layer directly on the surface of

Base layer is arranged.

If necessary, it is provided that the cover layer has a water-draining and/or water-repellent surface.

If necessary, it is provided that the top layer is designed as closed-cell mastic asphalt.

If necessary, it is provided that an outer cover layer is provided, which is arranged between the sealing compound and the outer upper edge of the base layer, or extends from the sealing compound to the outer upper edge of the base layer, with the outer cover layer in the transverse direction of the track running a gradient of at least

4%.

If necessary, it is provided that the width of the outer cover layer is between 20 cm and 70 cm, preferably between 25 cm and 50 cm.

If necessary, it is provided that an elasto-plastic joint compound is arranged between the outer cover layer and the casting compound.

If necessary, it is provided that the joint compound extends from the surface of the outer cover layer in the direction of the base layer, but ends in front of the surface of the base layer.

If necessary, it is provided that the track arrangement comprises two track supporting slabs arranged adjacent in the transverse direction of the track with corresponding casting compounds, and that an inner cover layer is provided (which is arranged between the casting compounds of the two adjacent track supporting slabs, the inner covering layer having a gradient in the transverse direction of the track having.

Optionally, it is provided that the inner covering layer has a crest running along the central area of the track arrangement and that the gradient is provided on both sides of the crest.

If necessary, it is provided that a drainage layer, in particular made of unbound rock granules, is arranged on the inner cover layer, and that a second cover layer is arranged on the drainage layer

is arranged.

If necessary, it is provided that the second cover layer has a gradient in the transverse direction of the course of the track of the track arrangement

If necessary, it is provided that the cover layer can be removed from the base layer.

Optionally, it is provided that on the side of the inner cover layer and optionally on the drainage layer and on the second cover layer between

Track support slab and / or casting compound, a drainage layer, in particular a drainage mat, is arranged, the drainage layer not the inner cover layer

penetrated up to the surface of the base course.

Optionally, it is provided that the inner cover layer and optionally the second cover layer are impermeable to water and comprise or consist of asphalt.

If necessary, it is provided that the inner cover layer in the transverse direction of the

Track course has a gradient of at least 1%.

If necessary, it is provided that the second cover layer in the transverse direction of the

Track course has a gradient of at least 4%.

If necessary, it is provided that the base layer has a modulus of elasticity between 4,000

Nm? and 6,000 N/m? having.

If necessary, it is provided that the base layer has a permanent flexural strength

between 0.6N/mm? and 1.0N/mm? having. If necessary, it is provided that the base layer is arranged on a base layer, which is formed from unbound rock granules, in particular gravel, or

this includes.

If necessary, it is provided that the base layer acts as a frost protection layer

is trained.

If necessary, it is provided that the base layer is a structure or that the base layer is a hydraulically bound base layer.

If necessary, provision is made for the track arrangement to have at least two in

Track support slabs arranged one after the other in the longitudinal direction of the track

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comprises, wherein a joint is provided between two consecutive track supporting slabs, the width of the joint being at least 1 cm.

If necessary, it is provided that an elastomer layer is arranged between the track support slab and the casting compound, which in particular

Includes elastomer granules.

If necessary, it is provided that the track-supporting slab rests directly on the casting compound, with in particular no elastomer layer being arranged between the track-supporting slab and the casting compound.

Optionally, the invention relates to a method for forming a track arrangement according to the invention, comprising the following steps:

a. forming a base course, the base course consisting of asphalt or comprising asphalt,

b. Positioning the track-supporting slabs along the supporting layer, the track-supporting slabs being positioned at a distance from the supporting layer so that a free space is formed between the track-supporting slabs and the supporting layer, and

C. Grouting of the free space with uncured grout, with the base layer protruding laterally beyond the grout in the transverse direction of the track, so that a base layer overhang is formed.

If necessary, it is provided that the overhanging base course is covered by a surface layer that is impermeable to water and consists of asphalt or includes asphalt, the surface of the surface layer being provided with a slope that drains outwards in the transverse direction of the track

becomes.

Optionally, the invention relates to a track arrangement system comprising a first track arrangement and a second track arrangement,

- wherein the first track arrangement is a track arrangement according to the invention, and

- Wherein the second track arrangement is a track arrangement of a slab track with a ballastless superstructure, the track supporting slabs, a base layer and a

comprises cast and hardened casting compound between the track supporting slabs and the base layer, the base layer being a hydraulically bound base layer,

- wherein the supporting layer of the first track arrangement is arranged on a base layer which is formed from unbound rock granules.

If necessary, provision is made for a transition track arrangement to be provided between the first track arrangement and the second track arrangement, which comprises track supporting plates, a supporting layer and a casting compound cast and hardened between the track supporting plates and the supporting layer, with the supporting layer of the transition track arrangement being arranged on a base layer which is provided with a

Binder partially bound rock granules includes or consists of.

If necessary, it is provided that the base layer of the second track arrangement is arranged on a base layer, which is designed as a trough structure.

If necessary, it is provided that the base layer of the first track arrangement is designed as an earth structure.

If necessary, it is provided that the binder is a hydraulic binder, in particular cement.

If necessary, it is provided that the base layer in the transition track arrangement

is at least partially a concrete base layer.

If necessary, it is provided that the base layer of the transition track arrangement protrudes with a wedge-shaped area into the base layer of the first track arrangement.

If necessary, it is provided that the transition track arrangement has the following areas adjacent to the first track arrangement:

a. first area, wherein the base layer is formed from asphalt or comprises asphalt, and wherein the base layer comprises or consists of rock granules partially bonded with a binder,

b. second area, wherein the base layer is a concrete base layer, and wherein the base layer comprises or consists of rock granules partially bonded with a binder,

C. third area, wherein the base layer is a concrete base layer, and wherein the base layer is a ballastless base layer, in particular a trough structure, and wherein the second track arrangement is adjacent to the third area.

If necessary, it is provided that between the second area and the third area there is an elastic intermediate element which bridges the two areas and which is arranged flat between the support layer and the base layer.

The present invention optionally relates to a track arrangement of a slab track, which comprises a plurality of prefabricated track supporting slabs and a casting compound cast and hardened between the track supporting slabs and a supporting layer. In particular, the base layer consists of asphalt or it includes asphalt.

The track support slabs have, in particular, at least one grouting opening through which the grouting compound is cast in an unsolidified state and introduced into the area between the base layer and the lower surface of the track support slab

can. The track support slabs are in particular monolithic track support slabs.

Provision is preferably made for the track support slabs to be mounted elastically. The elastic mounting can be at least partially due to the elasticity of the

Asphalt base layer can be effected.

If necessary, it is provided that an elastic layer for elastic storage and in particular for

elastic decoupling of the track supporting slabs is arranged.

In a first step, to form a track arrangement, preferably prefabricated track support slabs are aligned with respect to the subsoil. The subsoil is mostly a foundation following the course of the track or a base course, which is preferably made of asphalt or comprises asphalt. The alignment takes place in the

Usually characterized in that the support plates are held at a distance from the ground by means of adjusting elements, such as threaded bolts, whereby an adjustment of the adjusting elements, in particular the threaded bolts, can be used to adjust the inclination and align the support plates with respect to the ground.

Subsequently, the space between the subsoil and the track supporting slabs is then filled with a casting compound. In the case of the track arrangements, the support plates are preferably supported elastically in relation to the casting compound.

In order to be able to form a form-fitting connection of the track-supporting slabs with the casting compound, a form-fitting arrangement is preferably provided for each track-supporting slab. According to a preferred embodiment, the positive-locking arrangement comprises two positive-locking elements in the area of a track support slab, which are in positive-locking operative contact. Thus, the support plate comprises an opening as the first form-fitting element, which is filled by the casting compound, with the casting compound forming an extension in the area of the opening as the second form-fitting element. The opening of the track support slabs preferably runs essentially vertically and optionally extends as a through opening through the entire track support slabs. In this embodiment in particular, the opening can also act as a sealing opening for introducing the hardenable

Potting compound serve.

In order to produce the decoupling described in the area of the positive-locking arrangement as well, the support plate is preferably also provided with the elastic layer in this area.

This configuration is a form-fitting connection, in particular one

horizontally acting positive connection made, but which has a certain elasticity or a certain rigidity.

In a preferred manner, the track support slabs are essentially rectangular. A track support slab has in particular at least 4 rail support points or

at least 2 sleeper axes with 2 rail support points each.

A rail support point within the meaning of the present invention is in particular a fastening area or a fastening means for a rail.

If necessary, the base layer is wider than the grout in the transverse direction of the track. As a result, the base layer can protrude laterally beyond the sealing compound, as a result of which a base layer overhang is formed. If necessary, it is provided that the width of the track support slab in the transverse direction of the course of the track corresponds to the width of the sealing compound. Track support slab, support layer and casting compound run, in particular, essentially parallel to one another. If necessary, the overhang of the supporting layer is arranged on both sides of the sealing compound and/or the track supporting slab.

The base layer overhang or the surface of the base layer in the area of the base layer overhang is covered in particular with a top layer. The top layer may have a slope running towards the outer edge of the track assembly. This allows for efficient drainage of water from the track assembly. In particular, the slope starting from a central area

of the track layout.

The "surface" of the base layer refers in particular to the upper surface of the base layer or that surface which extends from an upper outer edge to the upper outer edge of the base layer which is opposite in relation to the width of the track arrangement. This definition also applies to the "surface" of others, where appropriate

Items unless otherwise noted. In the context of the present invention, "width" means unless otherwise stated

specified in particular those dimensions of an element or an object,

which runs transversely to the track extension and in a horizontal direction.

In order to improve the drainage of the liquid, the top layer can have a water-repellent surface and in particular made of mastic asphalt

be formed with a closed-pored surface or an asphalt surface layer.

In particular, the base layer and the top layer are two separate layers, optionally layers of different composition. The base layer takes on the load-bearing function for load transfer below the tracks and the top layer is a layer arranged above the base layer, which is exposed to UV radiation and rainwater and protects the base layer from these influences. The top layer may be a wear layer that is removable from the base layer. This allows the top layer to be renewed separately if necessary.

The cover layer can be removed from the base layer and thus be designed as a wear layer. As a result, the top layer can be renewed without interfering with the base layer, so that railway operations only have to renew the top layer

is minimally restricted.

If necessary, damage to the base layer that occurs when the top layer is renewed can be removed by applying the new top layer without additional

work step can be eliminated.

The base layer may have an open-pored and rough surface. The effect of this is that when the track arrangement is being formed, the casting compound can penetrate into the pore structure of the base layer, which can lead to the casting compound interlocking with the base layer. This is advantageous because it means that no additional holding means may have to be used in order to strengthen the connection between the casting compound and the base layer and to achieve horizontal load transfer between the casting compound and the base layer. In particular, a transition layer is formed, which is arranged between the supporting layer and the casting compound, and which allows lateral forces to be dissipated. As a result, the usual measures for connecting or interlocking base layer and

Casting compound, such as steel dowels, are dispensed with.

In particular, the roughness of the surface of the base layer is designed or selected in such a way that the coefficient of friction between the base layer and the casting compound is u=>0.6, in particular u>0.7, preferably according to EN 1992-1-1. Such a coefficient of friction can be achieved, for example, by milling grooves in the base layer. These grooves can have a width of about 5mm, a depth

of about 5 mm and a groove-to-groove spacing of about 5 cm.

The surface of the base layer itself does not have to have a slope or the surface of the base layer is in particular a rough surface. Flat surfaces of this type can be manufactured particularly easily using conventional asphalt finishers, with the requirements for manufacturing accuracy being able to be low. The casting compound decouples the accuracy of the track geometry from the production accuracy of the asphalt and inaccuracies in the production of the base layer can be compensated for by the casting compound without an additional work step and without increased demands on the possibility of adjustment in the rail support point. In particular, this embodiment allows tolerances in the manufacture of the base layer of greater than or equal to 5 mm.

If necessary, the surface, that is to say the upper surface, of the casting compound has a gradient that runs in the direction of the outer edge of the track arrangement. Through this

drainage can also be achieved via the casting compound.

If necessary, the surfaces, that is to say the upper surfaces, of the cover layer and the casting compound have a slope, in which case a drainage surface can be formed by the corresponding surfaces in particular. Such a drainage surface is in particular a continuous surface on the liquid up to

can run off to the outer edge.

If necessary, a drainage surface is provided, which runs along the surface of the casting compound and the cover layer. In particular, one

Drainage layer may be provided, which includes the top layer and potting compound. The drainage layer can have a thickness of at least 2 cm and/or

cover the base course continuously. This allows the base layer before

Water ingress and thus frost damage and UV radiation and thus aging remain protected and the top layer is designed as a wear layer that is exposed to frost and UV radiation without the dimensional stability and load-bearing capacity of the base layer being restricted and thus permanent track position stability can be ensured .

In one embodiment, a pair of tracks or a track support plate is provided on a superstructure and/or on a base layer with respect to the transverse direction of the course of the track. In this case, a supporting layer overhang is provided on both sides of the track supporting slab, which extends laterally from the casting compound to the corresponding outer edge of the supporting layer. The central area of the track arrangement then usually runs in the central area of the track, as a result of which the gradient of the cover layer, which can be arranged on either side of the casting compound, falls in the direction of the outer edge of the base layer. A top layer that extends from the grout to the top outer edge of the base layer can be used as the outer

Top layer are called.

In a further embodiment, at least two track supporting slabs arranged next to one another are provided on a superstructure or on a base layer with respect to the transverse direction of the course of the track, which enables the provision of two or more tracks running next to one another. In this case, a base course overhang is also provided, in particular on both sides of the casting compound, but the central area of the track arrangement may run along a base course overhang. It can then be provided that the top layer has a peak that runs along the central region, with the slope on both sides of the peak falling towards the outer edge of the base layer. A surface layer that extends from one grout to an adjacent one in the transverse direction of the track

Potting compound ranges can be provided as an inner cover layer.

Since the base layer may have UV-sensitive components, it may be necessary to protect the base layer from UV rays. This can be achieved on the one hand by the top layer and the grouting compound, but also by backfilling with loose rock granulate, in particular with gravel. The side surfaces of the base course,

which can extend from the outer upper edge to the outer lower edge of the base layer are optionally provided with a backfill of loose rock granules. The side surfaces of the base layer can be inclined so that the width of the base layer in the transverse direction of the track, measured from one outer lower edge to the opposite outer lower edge, can be greater than the corresponding width measured from the outer upper edge to the opposite outer upper edge. In particular, the base layer can have an inclined flank which is not covered by the top layer but, for example, by unbound rock granules.

If necessary, an elastomer layer is arranged between the track support slab and the casting compound, which elastomer layer can be formed in particular from elastomer granulate. This feature makes it easy to dismantle, since after the end of the service life of the track arrangement, the track support plates can be detached particularly easily from the asphalt base layer. The use of a release agent between the potting material and the elastomeric layer can further simplify this detachment. In this way, damage-free track supporting slabs can be reused. In addition, the elastomer layer can compensate for differences in stress caused by temperature-related deformation of the asphalt base course

develop.

If necessary, an elastomer layer between the track support plate and the casting compound can be omitted.

The support layer is optionally arranged on a base layer. The base layer can comprise or consist of unbound rock granules. In particular, the base layer can be a frost protection layer, which is designed, for example, in accordance with RVS 08.15.01 or the German guideline for the standardization of the superstructure of traffic areas (RStO).

Optionally, the present invention also relates to a method of forming a

track layout. Such a method optionally comprises the following steps: (a) forming an asphalt base course, (b) providing one or more

track support slabs, (c) positioning of the track support slabs in relation to a base course, (d) casting with a hardening casting compound. In step (c), the track supporting slabs are in particular not placed directly on the supporting layer, but a free space is left which is then filled with the casting compound. This allows the compensation of manufacturing tolerances in the formation of the base layer.

Optionally, the method includes the step of applying the topcoat to the backing. If necessary, this step takes place before the casting with the casting compound.

If necessary, it is provided that the supporting layer is roughened before the positioning of the track supporting slabs, in particular by milling with a milling device. For example, grooves can be milled into the surface.

The invention can also relate to a method for renewing a track arrangement according to the invention, with the steps of (a) removing the top layer from the base layer excess, in particular while retaining the base layer and sealing compound, and (b) covering the base layer excess with a top layer that is water-impermeable and made of asphalt or comprises asphalt, the surface of the surface course being provided with a slope draining outwards in the transverse direction of the track. This enables a particularly resource-saving renewal and traffic operations are only affected to a small extent.

Also described is a track assembly system that includes at least a first track assembly and a second track assembly. The first track arrangement can be a track arrangement with an asphalt base layer as described above. The second track arrangement can be a conventional track arrangement of a slab track, in particular with a ballastless superstructure. The base layer of the second track arrangement, on which the base layer rests, can be designed in the form of a known trough structure.

If slab track systems with asphalt base courses are installed, a connection to existing slab track systems, which often have a conventional structure with concrete base courses and/or hydraulically bound base courses on a ballastless superstructure, may be necessary.

Compared to systems with concrete base layers and/or hydraulically bound base layers, especially those on a ballastless superstructure, slab track systems with asphalt base layers, especially those that use unbound rock granulate as the base layer, have different mechanical properties. These are, for example, differences in the elasticity of the materials used, their strength or their thermal expansion

attributed.

A further object of the invention can therefore be seen in the provision of a suitable transition between these two systems.

If necessary, the track arrangement system thus includes a transition track arrangement arranged between the first track arrangement and the second track arrangement, which takes into account the property differences between the two to be connected to one another

Track layouts compensated.

Optionally, the second track arrangement is a track arrangement of a slab track with a ballastless superstructure to form a track for rail-bound traffic, comprising: (a) several prefabricated track supporting slabs made of reinforced concrete, in particular of loosely reinforced concrete, (b) one between the aligned in their position Track support slabs and a base layer, cast and hardened casting compound, and (c) several rail support points provided on the track support slabs for fastening the rails. Optionally, the base layer of the second track arrangement is a hydraulically bound base layer.

If necessary, the transition track arrangement is a track arrangement of a fortress

Roadway for forming a track for rail traffic, comprising: (a) a plurality of prefabricated track supporting slabs made of reinforced concrete, in particular of slack

reinforced concrete, (b) a grout poured and hardened between the track slabs aligned in their position and a base layer, and (c) several rail support points provided on the track slabs for the attachment of the rails. If necessary, the base layer of the second track arrangement is a concrete base layer.

In particular, include first track assembly, second track assembly and

Transition track arrangement same track support slabs and / or the same sealing compound.

Optionally, the base layer, on which the support layer of the transition track arrangement is arranged, comprises rock granules that are partially

binder is set.

If necessary, the transition track arrangement comprises several sub-areas, which differ in particular with regard to the design of the supporting layer and base layer

differentiate.

If necessary, in a first area, which adjoins the first track arrangement, a base layer of asphalt and a base layer of partially with

Binder set rock granules may be provided.

If necessary, a base layer made of concrete, in particular a concrete base layer, and a base layer made of rock granulate partially set with a binder can be provided in a second area, which adjoins the first area

be.

If necessary, in a third area, which adjoins the second area, a base layer made of concrete, in particular a concrete base layer, and a gravel-free base layer, in particular made of completely bonded material,

be provided.

If necessary, the second track arrangement can connect to the third area.

At the transition between the first track arrangement and the transition track arrangement, the base layer of the transition track arrangement can in particular be wedge-shaped or have a wedge. The wedge may protrude into the base layer of the first track assembly, wherein the wedge may have a slope running towards the base layer. In particular, the wedge or the inclined wedge surface extends to the base layer. The height of that part of the base layer, which consists of rock granulate partially set with a binder, may decrease in the area of the wedge in the direction of the base layer. Where appropriate, the wedge surface of the wedge is inclined with an inclination between 1:1 and 1:3 in the direction of the base course.

Due to the wedge-shaped design of the base layer, for example, settlement

and prevents or reduces elasticity differences between the track assemblies.

The area of the base layer of the transition track arrangement is formed in particular from cement-solidified rock granulate.

If necessary, it is provided that the rails are designed to be continuous and/or in one piece at least 10 m, preferably at least 15 m, from the transition from the third area to the second track arrangement, and in particular none

have welds.

If necessary, dowels are provided in the transition track arrangement for the, in particular form-fitting, connection of the base layer and the supporting layer.

If necessary, there is an intermediate element in the form of an elastic intermediate mat in the connecting track arrangement, in particular between the second and third areas

provided, the width of which corresponds to the width of the track supporting slabs.

If necessary, the transition between the second area and the third area forms a transition between the earth structure and the trough structure.

Further features of the present invention result from the patent claims, the figures and the following description of examples

Embodiments of the present invention.

show:

1 shows a schematic sectional view of a track arrangement according to the invention in the transverse direction to the course of the rails according to an exemplary embodiment;

Figure 1a is a detail view of part of Figure 1;

2 shows a schematic sectional view of a track arrangement system in the longitudinal direction of the rail track according to an exemplary embodiment.

Unless otherwise stated, the reference numbers in the figures denote the following components: rail 1, track supporting plate 2, supporting layer 3, supporting layer of the second track arrangement 3', supporting layer of the transition track arrangement 3", casting compound 4, rail support point 6, supporting layer overhang 7, cover layer 8, surface the top layer 9, central area 10, surface of the base layer 11, outer top layer 12, inner top layer 13, drainage layer 14, second top layer 15, joint compound 16, drainage layer 17, base layer 18, surface of the sealing compound 19, crest 20, outer top edge of the base layer 21, Joint 22, elastomer layer 23, first track arrangement 24, second track arrangement 25, transition track arrangement 26, first area 27, second area 28, third area 29, intermediate element 30, casting opening 31, ballast 32, flank of the base layer 33, outer lower edge of the base layer 34, wedge-shaped Area 37, wedge surface 38.

Fig. 1 shows a sectional view of a track arrangement according to the invention in the transverse direction to the rails according to an embodiment of the present invention. FIG. 1a shows a detailed view of a detail from FIG. 1. For the sake of simplicity, the two figures are described together below.

The track arrangement comprises two parallel running and in the transverse direction

spaced-apart track support plates 2, which have rail support points 6 on

which rails 1 are attached. The rails 1 run along the longitudinal direction of the track arrangement.

The track supporting slabs 2 are arranged on a supporting layer 3 which, in this exemplary embodiment, is formed from asphalt which has an open-pored and coarse-grained surface 11 . The connection between the track supporting slabs 2 and the supporting layer 3 is produced by a casting compound 4 which comprises a set or solidified hydraulic binding agent. During the formation of the track arrangement, the casting compound 4 is brought in an unsolidified state through the casting openings 31 between the underside of the track base plates 2 and the surface 11 of the base layer 3 .

Through the open-pored and rough surface 11 of the base layer 3, unsolidified casting compound 4 can penetrate into the structure of the base layer 3, which leads to an improved connection between the two layers. The thickness of the

Support layer 3 is about 30 cm in this embodiment.

In the exemplary embodiment illustrated in FIGS. 1 and 1 a , an elastomer layer 23 made of elastomer granulate is arranged between the casting compound 4 and the track support plate 2 . If necessary, this elastomer layer 23 can compensate for stresses that arise due to temperature-related deformations of the base layer 3 . Furthermore, the elastomer layer 23, possibly in conjunction with an additional separating agent, can make it easier for the track support plates 2 to be recycled, since they can be detached from the casting compound 4 so easily

can become.

In an exemplary embodiment that is not shown, however, none can

Elastomer layer 23 may be provided between casting compound 4 and track support plate 2 .

In the transverse direction of the track extension, the width of the track supporting slabs 2 essentially corresponds to the width of the casting compound 4. In contrast, the width of the supporting layer 3 is greater than the width of the casting compound 4 and track supporting slab 2 or, in the case of this exemplary embodiment, greater than the width of the two next to each other

lying track support slabs 2 or casting compounds 4 together. As a result, a supporting layer overhang 7 is formed, which extends on both sides of the casting compound 4 .

Since the open-pored surface 11 of the base layer 3 in the area of the base layer overhang 7 allows water to penetrate, which promotes frost damage, the surface 11 of the base layer 3 in the area of the base layer overhang 7, i.e. the area that is not covered by the sealing compound 4, is covered by a top layer 8 covered, which is asphalt with a smooth and closed-pore surface 9 in this embodiment.

In this exemplary embodiment, a distinction is made between the outer cover layer 12, which extends between the casting compound 4 and the outer upper edge 21 of the supporting layer 3, and the inner cover layer 13, which extends between the two neighboring casting compounds 4.

The cover layers 8 have a gradient that runs from the central area 10 of the track arrangement in the direction of the outer upper edge 21 of the base layer 3 . This promotes the drainage of water. The slope of the outer cover layer 12 is about 4% in this embodiment, that of the inner cover layer 13 is about 1%. It should be noted that the inner cover layer 13 in this embodiment has a slope that falls in two directions. Thereby a crest 20 is formed along the inner cover layer which runs along the middle region 10 of the track arrangement. It is thus on either side of the vertex 20

a gradient provided.

In the area of the casting compound 4, the height of the respective cover layer 8 essentially corresponds to the height of the casting compound 4, so that starting from the apex 20 over the surface 9 of the inner covering layer 13 over the surface 19 of the casting compound 4 to the surface 9 of the outer covering layer 12, a continuous surface is formed. In this exemplary embodiment, the surface 19 of the casting compound 4 also has a slope, starting from the central region 10, which is approximately 1% here. The continuous surface thus also has a continuous slope, so that a drainage surface is formed.

23737

An elasto-plastic joint compound 16 is arranged between the outer cover layer 12 and the casting compound 4 . However, this does not extend to the bottom of the outer cover layer 12 or to the surface 11 of the support layer 3 in order not to impair the liquid-tight effect of the cover layer 8 .

The inner cover layer 13 is covered by a drainage layer 14 of unbound rock granules, which in turn is covered by a second cover layer 15 . Like the other top layers 8, the second top layer 15 is made of asphalt with a closed-pore and smooth surface. Furthermore, the second cover layer 15 also has a gradient that falls on both sides of a crest 20 .

A drainage layer 17 in the form of a drainage mat is arranged to the side of the inner cover layer 13, drainage layer 14 and second cover layer 15. The drainage layer 17 is located in particular between the layers mentioned and the track supporting plate 2 and the casting compound 4 , with the drainage layer 17 not reaching the surface 11 of the supporting layer 3 . As a result, liquid that runs down the slope of the second cover layer 15 can seep up to the surface 9 of the inner cover layer 13 and from there over the drainage surface in the direction of the outer upper edge 21

the base layer 3 expire.

In the transverse direction of the track, the width of the base layer 3 measured from an outer upper edge 21 to the opposite outer upper edge 21 is smaller than its width measured from an outer lower edge 34 to the opposite outer lower edge 34. As a result, the base layer 3 has an inclined flank 33 which does not is covered by the cover layer 8. A bed of gravel 32 is provided in the area of the flank 33 to protect against environmental influences, in particular UV radiation.

In this exemplary embodiment, the track arrangement is designed in particular in the form of an earthen structure, with the base layer 18 arranged under the supporting layer 3 being formed from unbound rock granules, in particular in the form of an anti-freeze layer. The thickness of the frost protection layer is about 60 cm in this embodiment. The track arrangement can also be on a bridge,

a trough structure or a tunnel, with a concrete cover or a hydraulically bound base layer instead of the frost protection layer

can be provided.

In a method for forming such a track arrangement, the track support plates 2 are provided in one and then positioned in the desired position. Unsolidified casting compound 4 is then introduced through the casting openings 31, which then hardens in order to fix the position of the track supporting slabs 2. The casting compound 4 thus allows compensation for manufacturing tolerances of the base layer 3, which can be laid using a conventional method known in road construction without requiring particularly small tolerances during manufacture. This method differs from the methods conventionally used to form track arrangements with asphalt base layers, in particular by the non-direct bearing of track base plates or sleepers on the base layer.

FIG. 2 shows a sectional view of a track arrangement according to the invention in the longitudinal direction to the course of the rails according to an exemplary embodiment of the present invention. In Fig. 2 the track layout as shown in Fig. 1 is part of a track layout system. For better representation, FIG. 2 shows broken edges

shortened parts of the track arrangements.

The track arrangement from FIG. 1 is a first track arrangement 24 which is connected to a second track arrangement 25 by means of a connecting track arrangement 26 . The second track arrangement 25 is designed in a conventional manner with a base layer 18' in the form of a trough structure and the base layer 3' of the second track arrangement 25 is a hydraulically bound base layer in a known manner.

Track support slabs 2 and casting compound 4 are the same over the entire track arrangement system and the rails 1 are in a known manner via rail support points 6 with the

Track support plates 2 connected.

The track arrangement system shown in FIG. 2 forms, in particular, a transition between the second track arrangement 25, which is designed with a ballastless superstructure, to the

First track arrangement 24 according to the invention and serves, for example, to compensate for differences in elasticity of the materials and constructions used. In detail, the transition track arrangement 26 forms a connection between the trough structure of the second track arrangement 25 and the earth structure of the first track arrangement 24.

In this exemplary embodiment, the transition track arrangement 26 is divided into three areas. In the first area 27, which adjoins the first track arrangement 24, the asphalt base course of the first track arrangement 24 continues as a base course 3″. The base layer 18″ in the first area 27, on the other hand, is partially consolidated rock granulate that has been partially consolidated with cement. In the second area 28, which adjoins the first area 27, the base layer 18'' of the first area 27 continues, while the base layer 3'' changes to a concrete base layer. In the third area 29, which adjoins the second area 28, the base layer 3″ of the second area 28 continues, but the base layer 18″ changes to a ballastless base layer in the form of a trough structure. Finally, the second track arrangement 25 connects to the third area 29, with the base layer 18' not changing in comparison to the base layer 18" of the third area 29, but the base layer 3' is a hydraulically bound base layer.

At the transition from the second area 28 to the third area 29, an intermediate element 30 is provided between the base layer 18" and the support layer 3", which is designed in the form of an elastic intermediate mat. The transition between the second area 28 and the third area 29 forms in particular the transition between the earthwork and

trough structure.

A wedge-shaped area 37 of the base layer 18" is provided at the transition from the base layer 18 of the first track arrangement 24 to the base layer 18" of the transition track arrangement 26. The wedge-shaped area 37 protrudes into the base layer 18 of the first track arrangement, with a wedge surface 38 being provided which is inclined in the direction of the base layer 3″. In this embodiment, the slope is about 1:2.

In Fig. 2 can also be seen that between in the longitudinal direction of the course of the track successive track support plates 2 a joint 22 is formed in this

Embodiment has a width of about 4 cm. In order to improve the stability of the track arrangements, about 15 m is done before and after

the transition between the second area 28 and the third area 29 no welding of rails 1.

27137

Claims (1)

patent claims 1. Track arrangement of a slab track to form a track for rail traffic, comprising: - several prefabricated track supporting slabs (2) made of reinforced concrete, in particular of loosely reinforced concrete, - one between the track supporting slabs (2) aligned in their position and a supporting layer (3 ) cast and hardened casting compound (4), - several rail support points (6) provided on the track supporting slabs (2), for fastening the rails (1), - wherein the base layer (3) consists of asphalt or includes asphalt, and - wherein the The base layer (3) protrudes laterally beyond the sealing compound (4) in the transverse direction of the course of the track, so that a base layer overhang (7) is formed, characterized in that - the base layer overhang (7) is covered by a cover layer (8) which is water-impermeable and made of asphalt consists or comprises water-impermeable asphalt, and that the surface (9), i.e. the upper surface, of the covering layer (8) has a slope that drains outwards in the transverse direction of the course of the track. 2, track arrangement according to claim 1, characterized in that a drainage surface (16) is provided which runs continuously along the surface (9) of the cover layer (8) and along the surface (19), i.e. the upper surface, of the casting compound (4). runs. 3. Track arrangement according to claim 2, characterized in that the Drainage surface (16) is formed by a covering layer (8) and the casting compound (4) comprising a layer with a thickness of at least 2 cm. 11. 28 — 61795/GP/MB Track arrangement according to one of Claims 1 to 3, characterized in that - that the surface (11), i.e. the upper surface, of the base layer (3) is a flat surface, - and/or that the surface (11) of the base layer (3) is a surface formed by an asphalt finisher with a tolerance of at least 0.5 cm from the target height, in particular between 0.5 cm and 1 cm from the target height. Track arrangement according to one of Claims 1 to 4, characterized in that a transitional layer is provided in the transition region from the base layer (3) to the casting compound (4), in which the casting compound (4) is infused into the base layer (3) and in the hardened State in the base layer (3) protrudes. Track arrangement according to Claim 5, characterized in that the transition layer has a thickness of at least 5 mm. Track arrangement according to one of Claims 1 to 6, characterized in that the roughness of the surface (11) of the base layer (3) is selected or formed in such a way that the coefficient of friction between the base layer (3) and the casting compound (4) u = 0.6, in particular u = 0.7, according to EN 1992-1-1. Track arrangement according to one of Claims 1 to 7, characterized in that the cover layer (8) has a water-draining and/or water-repellent surface (9). Track arrangement according to one of Claims 1 to 8, characterized in that the covering layer (8) is in the form of closed-cell mastic asphalt. Track arrangement according to one of Claims 1 to 9, characterized in that an outer cover layer (12) is provided, which is arranged between the casting compound (4) and the outer upper edge (21) of the base layer (3), or is separated from the casting compound (4) extends to the outer upper edge (21) of the base layer (3). Track arrangement according to Claim 10, characterized in that - that between the outer cover layer (12) and the casting compound (4) an elasto 13. 14 15 16 17 29 — 61795/GP/MB plastic joint compound (16) is arranged, - The joint compound (16) extending from the surface (9) of the outer covering layer (12) in the direction of the supporting layer (3) but ending in front of the surface (11) of the supporting layer (3). Track arrangement according to one of Claims 1 to 11, characterized in that the track arrangement comprises two track supporting plates (2) which are arranged adjacently in the transverse direction of the course of the track and have corresponding casting compounds (4), and in that an inner cover layer (13) is provided which is between the casting compounds ( 4) of the two adjacent track support slabs (2), the inner covering layer (13) having a gradient in the transverse direction of the course of the track. Track arrangement according to Claim 12, characterized in that the inner covering layer (13) has a crest (20) which runs along the central region (10) of the track arrangement and that the gradient is provided on both sides of the crest (20). Track arrangement according to one of Claims 1 to 13, characterized in that the cover layer (8) can be removed from the base layer (3). Track arrangement according to one of Claims 1 to 14, characterized in that the base layer (3) is arranged on a base layer (18) which is formed from unbound rock granules or comprises this, that the base layer (18) is a structure, or that the Base layer (18) is a hydraulically bound base layer. Track arrangement according to one of Claims 1 to 15, characterized in that the track arrangement comprises at least two track-supporting slabs (2) arranged one after the other in the longitudinal direction of the course of the track, a joint (22) being provided between two consecutive track-supporting slabs (2), the Width of the joint (22) is at least 1 cm. Track arrangement according to one of claims 1 to 16, characterized in that between the track support plate (2) and the casting compound (3). 19 20 30 — 61795/GP/MB Elastomer layer (23) is arranged, which in particular comprises elastomer granules. A method of forming a track assembly as claimed in any one of claims 1 to 17, comprising the steps of: a. Forming a base layer (3), the base layer (3) consisting of asphalt or comprising asphalt, b. Positioning the track-supporting slabs (2) along the supporting layer (3), the track-supporting slabs (2) being positioned at a distance from the supporting layer (3) so that a free space is formed between the track-supporting slabs (2) and the supporting layer (3), and c. Casting the free space with uncured casting compound (4), the base layer (3) projecting laterally beyond the casting compound (4) in the transverse direction of the track, so that a base layer overhang (7) is formed, the supernatant base layer (7) being covered by a covering layer (8) which is impermeable to water and consists of asphalt or comprises asphalt, and wherein the surface (9) of the covering layer (8) in the transverse direction of the track is provided with a slope which drains outwards in the transverse direction of the track. Method according to Claim 18, characterized in that the supporting layer (3) is roughened before the positioning of the track supporting slabs (2), in particular by milling with a milling device. Method for renewing a track arrangement according to one of Claims 1 to 17, comprising the following steps: a. Removing the top layer (8) from the supernatant base layer (7), in particular while retaining the base layer (3) and casting compound (4), and b. Covering the overhang of the supporting layer (7) with a covering layer (8) which is impermeable to water and consists of asphalt or comprises asphalt, the surface (9) of the covering layer (8) being provided in the transverse direction of the track with a slope that drains outwards in the transverse direction of the track becomes.